 snr  psuccess  ntrials 10000 r6315, r6330
-27.0 0.000  0.001 
-26.5 0.004  0.014
-26.0 0.03   0.066 
-25.5 0.107  0.208   0.19
-25.0 0.353  0.424   0.40 (2)
-24.5 0.653  0.725 
-24.0 0.913  0.913
-23.5 0.983  0.988
-23.0 0.998  0.999
-22.0 1.0    1.0
